You heat 19.59 g of hydrated sodium sulfite. After heating, the anhydrous residue left behind has a mass of 9.14 g. Determine the formula and the name of the hydrate. (By the way, I completely made up this hydrate. It does not exist in reality) What is the formula for the hydrate? and what is the name of the hydrate?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.